Speaker box



FIG. 1 is a perspective view of a speaker box illustrating my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown are included for the purpose of illustrating portions of the speaker box that form no part of the claim. 

CLAIM The ornamental design for a speaker box, as shown and described. 